bthoefer Posted October 19, 2015 Share Posted October 19, 2015 I've got 2 SP-01s with the CZ competition rear sight. Both of them have worked themselves loose in the rear dovetail recently. Neither of the sights were filed on to fit them when they were installed. I've used some red loctite on them now to hopefully keep them tight. Does anyone have a better solution? Link to comment Share on other sites More sharing options...
mrpredictable Posted October 19, 2015 Share Posted October 19, 2015 Stake the sight in. Only thing that worked for me. Locktite and shimming did nothing. Link to comment Share on other sites More sharing options...
rowdyb Posted October 19, 2015 Share Posted October 19, 2015 I had to aggressively peen the bottom of the sight, apply loctite in the dovetail and on the set screw on a couple of different rear sights that would not stay put. Link to comment Share on other sites More sharing options...
bthoefer Posted October 19, 2015 Author Share Posted October 19, 2015 I'm thinking I might re zero the sights and mark where the set screw goes to drill a detent for it to go into. Had anyone had the same issue with the Cajun gun works rear sight coming loose? Link to comment Share on other sites More sharing options...
bthoefer Posted October 19, 2015 Author Share Posted October 19, 2015 Stake the sight in. Only thing that worked for me. Locktite and shimming did nothing. I've never had to do this, any advice on doing it ? Link to comment Share on other sites More sharing options...
rowdyb Posted October 20, 2015 Share Posted October 20, 2015 -mark where sight is zeroed (paint, tape, scratch, memory, marker whatever it takes for you to get it back to the same spot) -unscrew the set screw(s) -tap out the sight -turn the sight over so you're looking at the bottom, the side against the slide -take a brass punch and hammer a small "ding" or "dent" in the leading edge of the part that goes in the dovetail. always peen the sight as they can be replaced if you goof it up. much harder to do if you mess up the slide -dry fit/test fit the sight (this will be a guess, check and refine process as you can peen it too much) if it isn't tight then i prefer to peen in another place as well, rather than just making one bigger and bigger. -apply your choice of loctite in a clean dovetail -tap sight back in to where it was good and zeroed before -apply loctite to set screw and screw in -wait Link to comment Share on other sites More sharing options...
bthoefer Posted October 20, 2015 Author Share Posted October 20, 2015 -mark where sight is zeroed (paint, tape, scratch, memory, marker whatever it takes for you to get it back to the same spot) -unscrew the set screw(s) -tap out the sight -turn the sight over so you're looking at the bottom, the side against the slide -take a brass punch and hammer a small "ding" or "dent" in the leading edge of the part that goes in the dovetail. always peen the sight as they can be replaced if you goof it up. much harder to do if you mess up the slide -dry fit/test fit the sight (this will be a guess, check and refine process as you can peen it too much) if it isn't tight then i prefer to peen in another place as well, rather than just making one bigger and bigger. -apply your choice of loctite in a clean dovetail -tap sight back in to where it was good and zeroed before -apply loctite to set screw and screw in -wait Thanks Link to comment Share on other sites More sharing options...
ES13Raven Posted October 20, 2015 Share Posted October 20, 2015 (edited) I've got 2 SP-01s with the CZ competition rear sight. Both of them have worked themselves loose in the rear dovetail recently. Neither of the sights were filed on to fit them when they were installed. I have had this happen several times, and here is what finally fixed it for me: * Mark where the sight is zeroed (I took pictures and used the lines on the top of the slide vs the sight as a reference) * Tap out the sight * Clean the sight and dovetail with acetone, then rubbing alcohol (get any old loctite out, heat first if necessary) * Take a hammer and punch and create small dings on the sight where it makes contact with the dovetail (not the gap) * Put green loctite 609 in the dovetail and tap the sight back in to zero * Put more green loctite in the set-screw hole to fill up the gap in the dovetail (not higher than where the set-screw threads start at the bottom) * Let loctite set for 24 hours * Put blue loctite on the set-screw threads and put the screw in * Let loctite set for 24 hours Note that a heat-gun might be needed to remove the rear sight in the future. Edited October 20, 2015 by ES13Raven Link to comment Share on other sites More sharing options...
motosapiens Posted October 20, 2015 Share Posted October 20, 2015 peening the sight (and the dovetail) worked great for me on my cz and my sig 1911. also worked on the front sight of my nano. they have not moved since. loctite did nothing to help Link to comment Share on other sites More sharing options...
LeviSS Posted October 20, 2015 Share Posted October 20, 2015 (edited) Is this a very common problem? Is it just SP-01's or Shadows too? Edited October 20, 2015 by LeviSS Link to comment Share on other sites More sharing options...
plus45acp Posted October 21, 2015 Share Posted October 21, 2015 Is this a very common problem? Is it just SP-01's or Shadows too? IME this issue effects Shadows as well... jb Link to comment Share on other sites More sharing options...
Captiontom Posted October 21, 2015 Share Posted October 21, 2015 same thing happened to my shadow. I just covered the bottom of the sight in blue loctite and let it sit for a day. Link to comment Share on other sites More sharing options...
himurax13 Posted October 22, 2015 Share Posted October 22, 2015 That, is weird. Every new CZ Customs rear sight I have ever installed on a CZ need some sanding and filing to fit. Link to comment Share on other sites More sharing options...
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